Print Email Facebook Twitter Prediction of flow-induced noise using the expansion about incompressible flow approach Part of: ECCOMAS CFD 2006: Proceedings of the European Conference on Computational Fluid Dynamics· list the conference papers Title Prediction of flow-induced noise using the expansion about incompressible flow approach Author Schulze, A. Von Estorff, O. Date 2006-09-06 Abstract In the present paper an Expansion about Incompressible Flow approach, as suggested by Shen and Sørensen1, will be used and discussed for the simulation of flow-induced sound at low Mach numbers. The method consists of two parts: First solving for the incompressible, viscous flow field, and second computing the fluctuating acoustic field. As a result of this splitting approach, one can choose optimized numerical methods and grid sizes for each of the two parts. In the current contribution an explicit finite difference scheme is employed to solve the nonlinear acoustic equations, and the propagation and scattering of the sound are computed simultaneously. The acoustic results are presented for the sound generated by a circular cylinder in a flow at the Reynolds number of 150. In particular, the influence of the discretization parameters and the implementation of numerical filters are discussed and the accuracy of this hybrid method is compared to other approaches. Subject aero-acousticsincompressible flownonlinear acoustics To reference this document use: http://resolver.tudelft.nl/uuid:9a199eb0-13f0-4d76-a494-fd0fc1574b3e Part of collection Conference proceedings Document type conference paper Rights (c) 2006 Schulze, A.; Von Estorff, O. Files PDF Schulze.pdf 306.83 KB Close viewer /islandora/object/uuid:9a199eb0-13f0-4d76-a494-fd0fc1574b3e/datastream/OBJ/view